/*
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 * and open the template in the editor.
 */

package F.Demo;

/**
 *
 * @author Administrator
 */
public class CheckPhone {
    public static void main(String[]args){
        String mobile="1320202020";
        boolean flag=true;
        if(mobile.length()!=11){
            flag=false;
        }
        if(!(mobile.startsWith("13")||mobile.startsWith("15"))){
            flag=false;
        }
        String numstr="0123456789"; 
        for(int i=0;i<mobile.length();i++){
            char c=mobile.charAt(i);
            int temp=numstr.indexOf(c);
            if(temp<0){
                flag=false;
                break;
            }
        }
        if(flag){
    System.out.println("是合法的手机号码");
    }
        else{
            System.out.println("不是合法手机号码");
        }
    }

}
